“What we are currently witnessing in the arena of regional developments is Saudi Arabia’s agitating approach,” Iran’s foreign minister said.

“Saudi Arabia intends to leave a negative impact on Syria’s crisis through its escalating actions,” Zarif told the U.N. envoy who visited Tehran on Sunday to discuss the Syrian crisis with Iranian officials.

“We will not allow Saudi Arabia’s tension-generating approaches to leave a negative impact on the efforts aimed at the resolution of the Syria crisis,” he said.

This comes amid escalating rifts between Iran and Saudi Arabia after the execution of Shiite cleric Nimr al-Nimr along with 46 others at the hands of the Saudi authorities, which was followed by protests against the Saudi diplomatic mission in Tehran. Subsequently, Saudi Arabia and several other Arab countries have cut their diplomatic relations with Iran, accusing Tehran of involvement in igniting sectarian tensions between Shia and Sunnis in the Arab world.

Iran is the main regional ally to the Assad regime in Syria, supporting pro-Assad forces financially and militarily against Syrian rebels in a conflict that claimed lives of more than 300,000 people over nearly five years.